Is crisis a word in the Scrabble Dictionary

Yes, crisis is playable

...and is worth 9 points.

Found in the following dictionaries

Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)

"Crisis" Definition

noun

A crucial or decisive point or situation; a turning point.
A point in a story or drama when a conflict reaches its highest tension and must be resolved.
A sudden change in the course of a disease or fever, toward either improvement or deterioration.
An unstable condition, as in political, social, or economic affairs, involving an impending abrupt or decisive change.
The turning point for better or worse in an acute disease or fever.